April 11, 2011 12:19:37pm
All U.S. films released after 1963 are still under copyright unless they lack a valid copyright notice.http://www.copyright.gov/circs/circ15a.pdf
"Works originally copyrighted between January 1, 1964, and
December 31, 1977. Congress amended the copyright law on
June 26, 1992, to automatically renew the copyright in these
works and to make renewal registration for them optional.
Their copyright term is still divided between a 28-year original
term and a 67-year renewal term, but a renewal registration
is not required to secure the renewal copyright. The
renewal vests on behalf of the appropriate renewal claimant
upon renewal registration or, if there is no renewal registration,
on December 31 of the 28th year. For details about the
benefits of making a renewal registration, see Circular 15,
Renewal of Copyright."